Abstract
During the COVD-19 pandemic, some pediatric patients in many countries around the world experienced a syndrome resembling a severe Kawasaki disease (KD), often accompanied by shock. Due to the incomplete signs of the classic KD in the era before the present pandemic, in many publications from European countries and the United States, this condition was called «multisystem inflammatory syndrome in children – MIS-C» or «hyperinflammatory shock» or «Kawasaki-like syndrome». This syndrome with a new coronavirus infection is characterized by refractory fever, frequent gastrointestinal symptoms, heart damage (including coronary dilation in some patients, and acute left ventricular failure in the majority), increased ESR and CRP levels, neutrophilia, extremely high troponin levels, increased ferritin, AST, ALT, lactate dehydrogenase, creatine phosphate kinase, interleukin-6 and interleukin-10, coagulopathy with an increase in D-dimer and fibrinogen, thrombocytopenia, sometimes procalcitonin increase. The manifestations of a cytokine storm may meet the criteria for secondary hemophagocytic syndrome. The mechanism of myocardial damage remains unclear. Treatment with high-dose intravenous immunoglobulin is effective, and in the presence of signs of hemophagocytic syndrome, dexamethasone or methylprednisolone. Further research is needed to understand the pathogenesis, resemblance and differences of this syndrome with classic KD, understanding of heart injuiry and early recognition for the need of urgent care.
Published Version
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